Tellurian



(No Model.)

J.,K. RASSWBILER.

TELLURIAN. No. 477,846. PatentedJune 28, 1892.

UNITED STATES' PATENT .OFFICE.

JOHN K. RASSWEILER, OF WVHEATON, ILLIN OIS.

TELLURIAN.

SPECIFICATION formng part of -Letters Patent No. 477,846, dated J une 28, 1892.

Application filed Ju1y 13, 1891. serai in. 399.291. (No modal.)

.lo aZZ whom it may concern:

Be it known that I, JOHN K. RASSWEILER, a citizen of the United States of America, residing at Wheaton, in the county of Du Page and State of Illinois, have invented certain new and usefnl Improvements in Tellurians, of which the following is a specification.

Myinvention'relates to an 'apparatus designed for the purpose of enabling the motions and relative positions of the heavenly bodies to be graphically represented to the eye. It is in the nature of an improvement upon a prior invention for which Letters Patent No. 448,075 were issued to me on March 10, 1891.

The object of the present invention is to enable the orbits of the moons and planets to be more easily and satisfactorily operated, and also to furnish improved means for monnting these bodies themselves in their orbits in suoh a way that they may be' shown in any desired position and readily shifted from one place to another.

Referring to the drawings for an illustra tion of my invention in its preferred form, Figure 1 is a perspective of a device representing the earth and moon. Fig. 2 is a vertical sectionin line 2 2 of Fig. 1. Fig. 3 is a section in line 3 3 of Fig. 1. Fig. 4 is a section in line 4 4 of Fig. 2, and Fig. 5 is a detail perspective.

In the figures my improvements are shown as applied simply to the moon and to its orbit. It is of course my purpose to apply them also to the orbits of the ditterent planets; but in'so doing they Will not be materially changed, and hence their illustration in connection with one of the orbits Will be sufficient for all.

The earth, which is lettered E, is preferably mounted in a fiat board or plate A, so as to be half above ad half below the surface of the same to enable said surface t0 represent the ecliptic. The devices for mounting the earth are substantially the same as those described in my prior patent above referred to, and said patent also .illustrates r'ncans for uniting and supporting the different portions of the ecliptic plane A, which must be used when the planets, as well as the moon, are shown in place.

This invention is directed particlarly to the means employed for mounting the difieront orbits in the ecliptic plane and for mounting the moon and planets in their orbitS. The edge of the board A is provided With a peripheral groove a and is encircled by a baud or ring B. The latter is secured to the board or plate A by means of three or more screws C, arranged about the ring and fitting in the groove a, not tight enough, however, to prevent thern from readily sliding in said groove. The moons orbit, or the graphie representation thereof D, is then pivot-3d to the ring B by means of pivots d. This enables the orbit to be oscillated upon two pivots with perfeot freedom and the pivots themselves to be moved around as desired by sliding the ring B around with them.

As it is desirable to have the orbit remain in any position when once placed there, I provide friction-washers d about the pivots d, said washers being preferably made in the shape shown in Fig. 5, the same being a short spiral. r

To mount the moon in its orbit so that it can be easily shifted about and secured in place, I provide in the latter au undercut groove d and mount therein a sliding block F, held in the groove by tongues and threaded to receive a spindle g, upon which a globe G, repreSenting the moon, is mounted. The spindle g preferably has a head 9 within the nndercnt portion of the groove 01 to prevent it from being entirely unserewed from the bldck. The block itself, With its tongues f, slides freely in the groove d so that the moon may be shoved around into any desired positidn.. Then by screwing the head of the spindle tightly against the walls of the groove the block may be olamped to prevent it from being accidentally displaced.

It is obvious that there are numerous modifications of my invention which might be employed without departing fromthe principles thereot. Thus instead of using the screws 0 the ring B might have a continuous flange upon its inner surface or a number of lugs formed integral therewith. Again, it is not absolutely necessary to mount the ring so that it shall slide about the board B, as the effect would be snbsbantiafly the same if it were to slide Within the ringD and be pivoted to the board A.

I claim as new and desire to secure by Letters Patent- 1. The combination, WLh the plane A and the ring D, of the ring B, interposed betWeen the two and slidingiy secured to one and pivoted to the other, snbstantially as described.

2. The combnation, with the board A, having a peripheral groove a, of an encircling ring B, having three or more inward projectiens adapted to slide in said groove, and a ring D, pivoted to the ring B, substantialy as described.

3. The combination, with the board A, having the peripheral groove a, of the ring B, three or more screws O, threaded to the same and adapted to slide in said groove, and the JOHN K. RASSWEILER.

Witnesses= C. P. SMITH, CHARLES O. SHERVEY. 

